1; RUN: llc < %s -tailcallopt=false | FileCheck %s
2; CHECK: movl 8(%esp), %eax
3; CHECK: movl 8(%esp), %eax
4; CHECK-NOT: movl 8(%esp), %eax
5
6; PR3122
7; rdar://6400815
8
9; byval requires a copy, even with fastcc.
10
11target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
12target triple = "i386-apple-darwin9.5"
13	%struct.MVT = type { i32 }
14
15define fastcc i32 @bar() nounwind {
16	%V = alloca %struct.MVT
17	%a = getelementptr %struct.MVT* %V, i32 0, i32 0
18	store i32 1, i32* %a
19	call fastcc void @foo(%struct.MVT* byval %V) nounwind
20	%t = load i32* %a
21	ret i32 %t
22}
23
24declare fastcc void @foo(%struct.MVT* byval)
25